Home GPU Comparison AMD Radeon HD 6990M Rebrand vs AMD Radeon HD 6490M Mac Edition

AMD Radeon HD 6990M Rebrand vs AMD Radeon HD 6490M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6990M Rebrand and 256MB VRAM Radeon HD 6490M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M Rebrand 's Advantages
More VRAM (1024GB vs 256GB)
Larger VRAM bandwidth (70.40GB/s vs 25.41GB/s)
640 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 6990M Rebrand +433%
1.28 TFLOPS
Radeon HD 6490M Mac Edition
0.24 TFLOPS
VS

Graphics Card

Jul 2011
Release Date
May 2011
Vancouver
Generation
Vancouver
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
1100 MHz
Memory Clock
794 MHz

Memory

1024MB
Memory Size
256MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
64bit
70.40GB/s
Bandwidth
25.41GB/s

Render Config

14
Compute Units
2
-
-
-
800
Shading Units
160
40
TMUs
8
16
ROPs
4
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

12.80 GPixel/s
Pixel Rate
3.000 GPixel/s
32.00 GTexel/s
Texture Rate
6.000 GTexel/s
-
-
-
1280 GFLOPS
FP32 (float)
240.0 GFLOPS
-
-
-

Board Design

100W
TDP
Unknown
-
-
-
No outputs
Outputs
Portable Device Dependent
-
-
-

Graphics Processor

Broadway
GPU Name
Seymour
Broadway XTX
GPU Variant
Seymour XTX M2 (216-0809000)
TeraScale 2
Architecture
TeraScale 2
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
1.04 billion
Transistors
0.37 billion
166 mm²
Die Size
67 mm²

Graphics Features

11.2 (11_0)
DirectX
11.2 (11_0)
4.4
OpenGL
4.4
1.2
OpenCL
1.2
N/A
Vulkan
N/A
-
-
-
5.0
Shader Model
5.0

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